For a linear programming problem with the constraints 2X + 4Y =<100 and 1X + 8Y
=<100, two of its corner points are (0, 0) and (0, 25).
Group technology enables the grouping of parts into families based on similar
processing requirements.
Because service firms do not acquire goods and services externally, their supply-chain
management issues are insignificant.
Dispatching rules are typically judged by four effectiveness criteria: average completion
time, utilization, average number of jobs in the system, and average job lateness.
Smoothing a resource requirements profile to stay within capacity limits may increase
setup costs.
The Aggregate Plan, derived from the Master Production Schedule, specifies in more
detail how much of which products is to be made at what times.
In mass service and professional service, the operations manager should focus on
A) automation
B) equipment maintenance
C) sophisticated scheduling
D) human resources
E) all of the above
One disadvantage of process-oriented layouts arises from
A) the use of special purpose equipment
B) machine maintenance, which tends to seriously degrade the capacity of the entire
system
C) the use of specialized material handling equipment
D) the need for stable demand
E) the use of the general purpose machines and equipment
You are about to undertake manufacture of a labor-intensive electronics component.
The first unit took 300 hours. You are not sure whether the learning rate is 70% or 80%.
The initial phase of the contract calls for 6 of these components.
a. How much time will it take to complete all six at 70% learning?
b. How much time will it take to complete all six at 80% learning?
Top executives tend to focus their attention on which type of forecasts?
A) short-range
B) medium-range
C) long-range
D) weather
E) the forecast for the next day€s absentee levels
The objective of a human resource strategy is to
A) produce the demand forecast at lowest labor cost
B) match employment levels with demand
C) achieve a reasonable quality of work life at low cost
D) manage labor and design jobs so people are effectively and efficiently utilized
E) all of the above
For the two constraints given below, which point is in the feasible region of this
minimization problem? (1) 14x + 6y >=42 (2) x – y >= 3
A) x = -1, y = 1
B) x = 0, y = 4
C) x = 2, y = 1
D) x = 5, y = 1
E) x = 2, y = 0
Lost Maples Winery makes three varieties of contemporary Texas Hill Country wines:
Austin Formation (a fine red), Ste. Genevieve (a table white), and Los Alamos (a hearty
pink Zinfandel). The raw materials, labor, and contribution per case of each of these
wines is summarized below.
The winery has 2800 bushels of Variety A grapes, 2040 bushels of Variety B grapes,
800 pounds of sugar, and 1060 man-hours of labor available during the next week. The
firm operates to achieve maximum contribution. Refer to the POM for Windows panels
showing the solution to this problem.
Answer the following questions.
a. For maximum contribution, how much of each wine should be produced?
b. How much contribution will be made by selling the output?
c. Is there any sugar left over? If so, how much? If not, what is its shadow price (dual
value)? Explain what this value means to Lost Maples’ management.
d. Interpret the meaning of the lower bound to Labor in the Ranging analysis. That is,
explain how the solution would change if the amount of labor fell below that lower
value.
e. Interpret the meaning of the upper bound to Los Alamos wine in the Ranging
analysis.
Infant mortality refers to which one of the following examples?
A) high frequency on the left side of the MTBF distribution
B) failure of items used in the nursery ward of a hospital
C) failure of products with a very short life cycle
D) market failure of brand new products
E) high failure rate often encountered in the very early stages of the lifetime of a
product
The transportation method is a special case of the family of problems known as
A) regression problems
B) decision tree problems
C) linear programming problems
D) simulation problems
E) statistical problems
A work center is interested in limiting work-in-process by not allowing production to
start again until the current batch is finished. The best solution most likely involves
A) MRP
B) ConWIP cards
C) Gantt Charts
D) Johnson’s rule
E) Loading
The three classic types of negotiation strategies are
A) vendor evaluation, vendor development, and vendor selection
B) Theory X, Theory Y, and Theory Z
C) many suppliers, few suppliers, and keiretsu
D) cost-based price model, market-based price model, and competitive bidding
E) None of the above is correct.
Each X requires 2 of component Y; each Y requires 4 of part Z. The lead time for
assembly of X is 1 week. The lead time for the manufacture of Y is 1 week. The lead
time for the procurement of Z is 6 weeks. The cumulative lead time for X is
__________ weeks.
A) 6
B) 7
C) 8
D) 10
E) cannot be determined
Total demand for a transportation model is 15 while total supply is 20. Which of the
following should be included?
A) a dummy source of 20 units
B) a dummy destination of 5 units
C) a dummy source of 5 units
D) a dummy destination of 20 units
E) none of the above
Ergonomics is not concerned with
A) levels of illumination, noise, temperature, and humidity
B) adjusting and providing input to the machine
C) feedback (providing information to the operator)
D) adequate compensation schemes
E) the design of functional and comfortable office furniture
What combination of a and b will yield the optimum for this problem?
Maximize $6a + $15b, subject to (1) 4a + 2b =< 12 and (2) 5a + 2b =< 20 and (3) a, b
>= 0.
A) a = 0, b = 0
B) a = 3, b = 3
C) a = 0, b = 6
D) a = 6, b = 0
E) cannot solve without values for a and b
Which of the following is true regarding simulation?
A) If an analytical model can’t solve a problem, neither can a simulation.
B) Simulation can only be done by computer.
C) Monte Carlo simulation requires the use of random numbers.
D) Simulation models are inexpensive.
E) All of the above are true.
High fixed costs and low variable costs are typical of which approach?
A) product
B) process
C) mass customization
D) repetitive
E) A and C
An engineering change notice is used to change a(n)
A) MRP
B) MPS
C) ERP
D) BOM
E) none of the above
Because problems with fixed-position layouts are so difficult to solve well onsite,
operations managers
A) virtually never employ this layout strategy
B) utilize this approach only for construction projects such as bridges and office towers
C) increase the size of the site
D) often complete as much of the project as possible off-site
E) utilize this layout only for defense contractors
Identify the techniques for improving service productivity. For any two techniques,
describe in a short paragraph, and include an example.
The 5S term __________ includes analysis to improve workflow and reduce wasted
motion.
Joe’s Manufacturing is considering bidding on a small order for 5 units. Based on
similar products that they have made in the past, they believe that the first unit will take
500 labor hours. They also believe that there will be an 80% learning rate. How many
hours of labor should Joe include for his bid?
Why do some firms have longer planning horizons than others?
Why are organizations changing from batch (large) shipments to just-in-time (JIT)
shipments?
Has there been any political backlash in the United States resulting from outsourcing in
foreign countries? Explain.
Felicien grows mirlitons (that’s Cajun for Chayote squash) in his 100 by 100 foot
garden. He then sells the crop at the local farmers’ market. Two summers ago, he was
able to produce and sell 1200 pounds of mirlitons. Last summer, he tried a new fertilizer
that promised a 50% increase in yield. He harvested 1900 pounds. Did the fertilizer live
up to its promise?
Compare and contrast throughput with manufacturing cycle time.